Issue description:
random server crashes
Steps to reproduce:
N/A
Versions:

• Minecraft: 1.12.2
• Forge: 1.12.2-14.23.5.2838
• McJtyLib: 1.12-3.1.1
• RFTools: 1.12-7.61
• SpongeForge: 1.12.2-2768-7.1.6-RC3616

Relevant logs, if any:
https://paste.dimdev.org/azumivavop.sql

It is crashing in Mekanism. Please report to them

I don't necessarily agree that this is Mekanism's fault. Looking through the code, it seems that what must have happened is that a BlockPos ended up with one of their blocks, but one of our TEs.

I see Sponge was installed, and that's always my first suspect for odd culprits like this one.